html,
body,
#root,
.App{
  height: 100%;
  width: 100%;
}

.App{
  height: 100%;
  width : 100%;
  background-color: #191970;
  .head{
    height: 10%;
    margin: 0 auto;
    line-height: 250px;
    .headtitle{
      margin: 0 auto;
      color: white;
      width: 20vw;
      text-align: center;
    }
  }
  .body{
    height: 90%;
    .bodytop{
      overflow: hidden;
      height: 47%;
      width: 93vw;
      margin: 0 auto;
      .divbox{
        float: left;
        width: 28vw;
        height: 1050px;
        margin-left: 50px;
      }
      .topone{
        margin-left: 250px;
      }
    }
    .bodybottom{
      overflow: hidden;
      height: 47%;
      width: 93vw;
      margin: 0 auto;
      margin-top: 50px;
      .divbox{
        float: left;
        width: 28vw;
        margin-left: 50px;
        height: 1050px;
      }
      .bottomone{
        margin-left: 250px;
      }
    }
  }
}

.divhead{
  background: linear-gradient(to right, #4BB1E5,#1B1C72);
}